CN218246433U - Chassis device and seat - Google Patents

Abstract

The utility model discloses a chassis device and seat, including runner assembly and adjusting part. The rotating assembly comprises a chassis, a connecting seat and a rotating shaft, the rotating shaft is rotatably connected with the chassis, the rotating shaft is fixedly connected with the connecting seat, the chassis is fixedly connected with the seat cushion, and the connecting seat is fixedly connected with the chair back. The adjusting assembly comprises a first clamping block, and the first clamping block is fixed on the rotating shaft; the first clamping block can be abutted against the chassis to limit the backward inclining angle of the connecting seat relative to the chassis. The utility model discloses a chassis device can effectively improve the maximum angle of bending backward of the back of the chair.

Description

Chassis device and seat

Technical Field

The utility model relates to a seat technical field especially relates to a chassis device and seat.

Background

With the increasing demand of consumers for the comfort level of the chair, most of the current various chairs, such as office chairs, conference chairs, home chairs and the like, adopt an elastic reclining mechanism, and the elastic reclining mechanism can realize the elastic reclining of the chair back.

A conventional elastic reclining mechanism includes a seat back, a chassis, and an elastic rod, wherein one end of the elastic rod is fixedly connected to the chassis, the lower end of the seat back is rotatably connected to the chassis, and the lower end of the seat back is supported on the upper surface of the elastic rod. When the chair back tilts backwards, the lower end of the chair back slides along the upper surface of the elastic rod, and the other end of the elastic rod is pressed downwards, so that the elastic tilting backwards is realized.

In the related art, on the basis of the elastic reclining mechanism, the seat is usually further provided with a chassis device, the chassis device can adjust the maximum reclining angle of the seat back, and when the seat back is at the maximum reclining angle, the seat back can be stably supported, so that a consumer can lean on the seat back with confidence. However, due to structural limitations, the maximum backward-leaning angle of the existing chassis device is still small, the adjustment of the maximum backward-leaning angle is inconvenient, and the maximum backward-leaning angle is difficult to accurately control and is not enough to meet consumption requirements.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a chassis device can effectively improve the maximum angle of bending backward of the back of the chair.

The utility model discloses still provide a seat that has above-mentioned chassis device.

According to the utility model discloses a chassis device of first aspect embodiment includes:

the rotating assembly comprises a chassis, a connecting seat and a rotating shaft, the rotating shaft is rotatably connected with the chassis, the rotating shaft is fixedly connected with the connecting seat, the chassis is used for being fixedly connected with a seat cushion, and the connecting seat is used for being fixedly connected with a chair back;

the adjusting assembly comprises a first clamping block, and the first clamping block is fixed on the rotating shaft; the first clamping block can be abutted against the chassis to limit the backward inclining angle of the connecting seat relative to the chassis.

According to the utility model discloses chassis device has following beneficial effect at least: the first clamping block is fixed on the rotating shaft, and when a connecting seat for connecting the chair back rotates relative to the chassis, the rotating shaft is driven to rotate, and then the first clamping block is driven to rotate; because the first fixture block is fixed on the rotating shaft, even if the rotating shaft rotates at a large angle, the swing amplitude of the first fixture block is smaller, and the chassis can meet the requirement of abutting against the first fixture block (for example, the chassis does not need to be designed to be thicker, and can meet the requirement of abutting against the first fixture block when the rotating shaft tilts backwards at a large angle), namely, the connecting seat can rotate at a large angle relative to the chassis, so that the maximum backward tilting angle of the chair back can be improved.

According to some embodiments of the present invention, the adjusting assembly further comprises a first stopper, the first stopper is connected to the chassis, and the first stopper comprises a plurality of first steps with different heights; each first step can be respectively abutted against the first clamping block so as to adjust the maximum backward inclination angle B of the connecting seat relative to the chassis.

According to the utility model discloses a some embodiments, first fixture block is equipped with first plane, each first step is equipped with the second plane, rotatory to setting for the angle first plane can with corresponding the laminating of second plane.

According to the utility model discloses a some embodiments, the chassis is equipped with the spout, first stopper is located in the spout, first stopper can slide along the first direction in the spout, so that each first step respectively with first fixture block supports and holds.

According to some embodiments of the present invention, the adjusting assembly further comprises a first elastic member and a positioning member, wherein a plurality of grooves are formed on an inner surface of the sliding groove, and are spaced along the first direction; the first limiting block is provided with a mounting hole, the positioning piece and the first elastic piece are both arranged in the mounting hole, and the first elastic piece is used for keeping the positioning piece in any one of the grooves; the positioning piece can simultaneously abut against the inner surface of the mounting hole and the inner surface of any one of the grooves so as to limit the movement of the first limiting block along the first direction.

According to some embodiments of the invention, the positioning element comprises a ball; or, the setting element includes the reference column, the reference column orientation the terminal surface of spout includes the curved surface.

According to some embodiments of the utility model, the runner assembly still includes the second stopper, the second stopper is fixed in the connecting seat, the chassis is equipped with the ka tai, the second stopper can with the ka tai supports and holds, in order to inject the connecting seat is relative the maximum angle of heeling back B on chassis.

According to some embodiments of the utility model, the adjusting part still includes the third stopper, third stopper detachably is fixed in the chassis, first fixture block can with the third stopper supports and holds, in order to inject the connecting seat is relative the maximum angle of pitching on chassis.

According to the utility model discloses a seat of second aspect embodiment includes:

the above-described chassis device;

the seat cushion is fixedly connected with the chassis;

the chair back is fixedly connected with the connecting seat.

According to the utility model discloses seat has following beneficial effect at least: by using the chassis device, the maximum backward tilt angle of the chair back can be effectively improved, so that the consumption requirements are met.

According to some embodiments of the present invention, the chair further comprises a fastener, the connecting seat is provided with a slot, and one end of the chair back is inserted into the slot; the one end of the chair back is fixed on the connecting seat through the fastener so as to limit the movement of the one end of the chair back which is separated from the slot.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic view of a chassis device in the related art;

fig. 2 is a schematic view of a seat according to an embodiment of the present invention;

FIG. 3 is a perspective view of the chassis arrangement of the seat of FIG. 2;

FIG. 4 is a perspective view of the chassis device of FIG. 3 from another angle;

FIG. 5 is a bottom view of the disc device of FIG. 3;

FIG. 6 is an exploded view of the disk device of FIG. 3;

FIG. 7 is a perspective view of a first stop block of the disc device of FIG. 3;

FIG. 8 is a right side view of a first cartridge of the disc device of FIG. 3;

FIG. 9 is a bottom view of the chassis device of FIG. 3 at a first maximum recline angle;

FIG. 10 is a right side view of the chassis device of FIG. 3 at a first maximum recline angle;

FIG. 11 is a bottom view of the chassis device of FIG. 3 at a second maximum recline angle;

FIG. 12 is a right side view of the chassis device of FIG. 3 at a second maximum recline angle;

FIG. 13 is a bottom view of the chassis device of FIG. 3 at a third maximum recline angle;

FIG. 14 is a right side view of the chassis device of FIG. 3 at a third maximum recline angle;

FIG. 15 is a perspective view of the disc device of FIG. 3 at a fourth maximum recline angle;

FIG. 16 is a bottom view of the chassis device of FIG. 3 at a fourth maximum recline angle;

fig. 17 is a right side view of the chassis device of fig. 3 at a fourth maximum recline angle.

Reference numerals: a seat cushion 110, a bracket 120, a universal wheel 130, a wheel frame 140, a gas spring 150, a chair back 160, a second fixture block 170, a fourth limiting block 180 and a second step 181;

the rotating assembly 200, the chassis 210, the clamping table 211, the groove 212, the sliding groove 213, the second semicircular groove 214, the connecting seat 220, the second limiting block 221, the slot 222, the rotating shaft 230, the cover plate 240, and the first semicircular groove 241;

the adjusting assembly 300, the first stopper 310, the second plane 311, the first step 312, the boss 313, the mounting hole 314, the first elastic member 320, the positioning member 330, the limiting plate 340, the first through hole 341, the first latch 350, the second through hole 351, the first plane 352, and the third stopper 360.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

In the description of the present invention, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, fig. 1 is a schematic view of a chassis device of a seat in the related art. The seat cushion 110 is mounted on the chassis 210 through the bracket 120, and the seat cushion 110 is located above the chassis 210. The front end of the connecting base 220 is rotatably connected with the chassis 210, and the rear end of the connecting base 220 is provided with the chair back 160. In order to adjust the maximum reclining angle of the chair back 160, a fourth limiting block 180 is usually installed on the chassis 210, the fourth limiting block 180 is provided with a plurality of second steps 181 with different heights, and a second locking block 170 is installed on the connecting seat 220. By moving the fourth limiting block 180 forward and backward, the second steps 181 with different heights are respectively abutted against the second latch 170, so as to limit the maximum backward tilt angle of the seat back 160.

Since the second latch 170 is mounted on the coupling holder 220, when the coupling holder 220 rotates with respect to the chassis 210, the radius R of rotation of the second latch 170 is large. Therefore, when the connecting base 220 rotates a certain angle relative to the chassis 210, the swing distance D of the second latch 170 is larger. When the reclining angle a of the seat back 160 is too large (e.g., 130 °), the second latch 170 moves to a lower position, and the fourth limiting block 180 cannot meet the requirement of abutting against the second latch 170.

In addition, in the related art seat, the second latch 170 and the fourth stopper 180 are installed between the base plate 210 and the coupling seat 220, which may limit the rotation radius R of the second latch 170.

Referring to fig. 2 to 6, fig. 2 is a schematic view of a seat according to an embodiment of the present invention, fig. 3 is a perspective view of a chassis device of the seat in fig. 2, fig. 4 is a perspective view of another angle of the chassis device in fig. 3 (i.e., a perspective view of the bottom adjustment device in fig. 3 after being rotated by 180 ° around an axis in the front-rear direction), fig. 5 is a bottom view of the chassis device in fig. 3, and fig. 6 is an exploded view of the chassis device in fig. 3.

The chassis device according to the embodiment of the first aspect of the present invention includes a rotating assembly 200 and an adjusting assembly 300. The rotating assembly 200 comprises a base plate 210, a connecting seat 220 and a rotating shaft 230, wherein the rotating shaft 230 is rotatably connected with the base plate 210, the rotating shaft 230 is fixedly connected with the connecting seat 220, the base plate 210 is fixedly connected with the seat cushion 110, and the connecting seat 220 is fixedly connected with the seat back 160. The adjusting assembly 300 includes a first latch 350, and the first latch 350 is fixed to the rotating shaft 230. The first latch 350 can abut against the bottom plate 210 to limit the tilting angle of the connecting seat 220 relative to the bottom plate 210.

According to the utility model discloses chassis device has following beneficial effect at least: the first latch 350 is fixed to the rotating shaft 230, and when the connecting seat 220 for connecting the chair back 160 rotates relative to the chassis 210, the first latch 350 is driven to rotate by driving the rotating shaft 230; because the first latch 350 is fixed to the rotating shaft 230, even if the rotating shaft 230 rotates at a large angle, the swing amplitude of the first latch 350 is small, and the chassis 210 can meet the requirement of abutting against the first latch 350 (for example, the chassis 210 does not need to be made thick, and when the seat tilts backward at a large angle, the chassis 210 can also meet the requirement of abutting against the first latch 350), that is, the connecting seat 220 can rotate at a large angle relative to the chassis 210, which is beneficial to improving the maximum tilting angle of the seat back 160.

Compared with the seat in the related art, the embodiment of the present application can effectively shorten the rotation radius of the first latch 350 by directly fixing the first latch 350 to the rotation shaft 230, so as to reduce the requirement for the first latch 350 to abut against the chassis 210 (specifically, the requirement for the first latch 350 to abut against the first limiting block 310, see below).

Specifically, in order to fix the first latch 350 to the rotating shaft 230, a second through hole 351 (refer to fig. 8) is formed in the first latch 350, the rotating shaft 230 is inserted into the second through hole 351, and the first latch 350 and the rotating shaft 230 are welded and fixed.

Specifically, to realize the rotating connection between the rotating shaft 230 and the chassis 210, the rotating assembly 200 further includes a cover plate 240, the cover plate 240 is provided with a first semicircular groove 241, and the chassis 210 is provided with a second semicircular groove 214. The rotating shaft 230 is disposed in the second half-slot 214, and then the cover plate 240 is fixed to the chassis 210 by screws, the first half-slot 241 and the second half-slot 214 together form a circular hole for accommodating the rotating shaft 230, and the cover plate 240 can prevent the rotating shaft 230 from being separated from the second half-slot 214. Thus, the shaft 230 may be rotatably coupled to the chassis 210.

In addition, in order to reduce the friction between the rotating shaft 230 and the cover plate 240 and between the rotating shaft 230 and the chassis 210, the rotating shaft 230 may be inserted into a shaft sleeve, and the shaft sleeve may be fixed in the circular holes formed by the first semicircular groove 241 and the second semicircular groove 214, thereby reducing the friction.

Referring to fig. 5 to 7, in some embodiments of the present invention, the adjusting assembly 300 further includes a first stopper 310, the first stopper 310 is connected to the chassis 210, and the first stopper 310 includes a plurality of first steps 312 (see fig. 7) with different heights. Each first step 312 can be respectively abutted against the first latch 350 to adjust the maximum tilting angle B (refer to fig. 10) of the connecting seat 220 relative to the chassis 210.

By respectively abutting the first steps 312 with different heights against the first latch 350, the maximum backward tilting angle B of the connecting seat 220 relative to the chassis 210, i.e. the maximum backward tilting angle of the backrest 160 relative to the seat cushion 110, can be adjusted, thereby improving the compatibility of the seat and satisfying different requirements.

Referring to fig. 6 to 8, in some embodiments of the present invention, the first latch 350 is provided with a first plane 352, each first step 312 is provided with a second plane 311, and the first plane 352 rotated to a predetermined angle can be attached to the corresponding second plane 311.

Since the angle between the first plane 352 and the horizontal plane changes after the first latch 350 rotates around the axis in the left-right direction, if the second planes 311 are all parallel to the horizontal plane, when the first plane 352 abuts against each second plane 311, the contact between the plurality of second planes 311 and the first plane 352 is necessarily line contact, not plane contact. When the second plane 311 is in line contact with the first plane 352, the contact surface between the second plane 311 and the first plane 352 is small, a local area may bear a large pressure, and the first latch 350 and the first limiting block 310 are easily damaged, so that the seat cannot be used normally.

The first plane 352 rotated to the set angle is attached to the corresponding second plane 311, so that the second plane 311 is in surface contact with the first plane 352, the stress area is increased, pressure is dispersed in an area with a large area, and the first fixture block 350 and the first limiting block 310 are not easily damaged, so that the service life of the seat is prolonged.

Specifically, the first plane 352 may pass through the axis of the rotating shaft 230, and the intersection line of the second planes 311 may coincide with the axis of the rotating shaft 230. Therefore, the rotating shaft 230 rotates to drive the first plane 352 to a set angle, the angle of the corresponding second plane 311 is the same as that of the first plane 352, and the distance between the first plane 352 and the second plane 311 is zero, that is, the first plane 352 rotated to the set angle can be attached to the corresponding second plane 311.

In addition, during design, when the first plane 352 swings to an angle, the plane where the first plane 352 is located is determined, and the second plane 311 is arranged on the plane, so that the first plane 352 rotated to the angle can be attached to the corresponding second plane 311. By analogy, a plurality of second planes 311 meeting the requirement can be obtained.

Referring to fig. 6, in some embodiments of the present invention, the chassis 210 is provided with a sliding groove 213, the first stopper 310 is located in the sliding groove 213, and the first stopper 310 can slide in the sliding groove 213 along a first direction, so that each of the first steps 312 abuts against the first latch 350.

Therefore, the requirement that each first step 312 respectively abuts against the first latch 350 can be met by sliding the first stopper 310 in the sliding groove 213.

Specifically, the adjusting assembly 300 further includes a limiting plate 340, and the limiting plate 340 is provided with a first through hole 341. The limiting plate 340 is fixed to the chassis 210 by screws, and the limiting plate 340 abuts against the boss 313 of the first limiting block 310, so that the first limiting block 310 is limited in the sliding groove 213. Each first step 312 protrudes through the first through hole 341, and is abutted against the first latch 350.

Specifically, the first direction may be a linear direction, for example, the first direction is a left-right direction. The first direction may also be a direction of rotating around an axis in the vertical direction, at this time, the first stopper 310 is a turntable, and the first steps 312 are distributed on the edge of the turntable.

Referring to fig. 6 and 7, in a further embodiment of the present invention, the adjusting assembly 300 further includes a first elastic member 320 and a positioning member 330, the inner surface of the sliding groove 213 forms a plurality of grooves 212, and the plurality of grooves 212 are spaced along the first direction. The first stopper 310 is provided with a mounting hole 314, the positioning member 330 and the first elastic member 320 are disposed in the mounting hole 314, and the first elastic member 320 is used for holding the positioning member 330 in any one of the recesses 212. The positioning member 330 can simultaneously abut against the inner surface of the mounting hole 314 and the inner surface of any one of the recesses 212 to limit the movement of the first stopper 310 along the first direction.

Accordingly, the position of the first stopper 310 in the first direction may be adjusted, and the first stopper 310 may be fixed at a desired position, so that the maximum reclining angle B of the connecting seat 220 with respect to the base plate 210 may be stably adjusted.

Specifically, when the first limiting block 310 is not acted by an external force, the positioning element 330 is pressed against the groove 212 under the action of the first elastic element 320, the positioning element 330 can simultaneously press against the inner surface of the mounting hole 314 and the inner surface of any one of the grooves 212, the first limiting block 310 cannot move along the first direction, that is, the first limiting block 310 is kept at a fixed position and cannot slide randomly, and the maximum backward tilt angle B of the connecting base 220 relative to the chassis 210 cannot change randomly.

When the maximum tilting angle B of the connecting seat 220 relative to the chassis 210 needs to be adjusted, the first stopper 310 slides along the first direction by an external force, and the inner surface of the recess 212 drives the positioning member 330 to retract into the mounting hole 314. Since the first elastic member 320 can be elastically deformed, the positioning member 330 can be temporarily retracted into the mounting hole 314, and the first stopper 310 can slide along the first direction. When the first stopper 310 moves to the predetermined position, the positioning member 330 is ejected again by the first elastic member 320 and is pressed against the corresponding groove 212, and the position of the first stopper 310 is fixed again.

Specifically, the first elastic member 320 includes a compression spring, one end of the compression spring abuts against the inner surface of the mounting hole 314, and the other end of the compression spring abuts against the positioning member 330. When the compression spring is disposed in the mounting hole 314, the mounting hole 314 has a pre-compression amount, such that the compression spring can urge the positioning member 330 against the recess 212. In addition, the first elastic member 320 may also use a rubber column.

Referring to fig. 6, in some embodiments of the present invention, the positioning member 330 includes a ball. The surface of the ball is a spherical surface, and when the ball slides from one groove 212 to the other groove 212, the ball is not easy to be clamped, so that the first limiting block 310 is not easy to move, and the position of the first limiting block 310 can be adjusted more conveniently.

In some embodiments of the present invention, the positioning member 330 includes a positioning column, and the end surface of the positioning column facing the sliding groove 213 includes a curved surface. At this time, one end of the positioning column, which is far away from the sliding groove 213, abuts against the compression spring, the end surface of the positioning column, which faces the sliding groove 213, is matched with the sliding groove 213, and the end surface of the positioning column, which faces the sliding groove 213, includes a curved surface, so that the positioning column is not easily clamped when sliding from one groove 212 to another groove 212, and therefore, the first limiting block 310 is not required to be moved.

Specifically, the end face of the positioning column facing the sliding groove 213 includes a spherical surface, and the spherical surface is a regular curved surface, which facilitates processing, so that the processing cost can be reduced.

Referring to fig. 6 and 15, in some embodiments of the present invention, the rotating assembly 200 further includes a second limiting block 221, the second limiting block 221 is fixed to the connecting seat 220, the chassis 210 is provided with a clamping table 211, and the second limiting block 221 can abut against the clamping table 211 to limit the maximum tilting angle B of the connecting seat 220 relative to the chassis 210.

By providing the second stopper 221 and the locking platform 211, a safety guarantee can be provided for the backward tilting of the chassis 210, that is, when the abutting between the first stopper 350 and the first stopper 310 fails (for example, the first stopper 350 is separated from the rotating shaft 230, or the first stopper 350 is broken), the chassis 210 continues to tilt backward until the second stopper 221 abuts against the locking platform 211, and at this time, the position of the connecting seat 220 is limited again.

In addition, when the second stopper 221 abuts against the locking platform 211, the maximum tilting angle B of the chassis 210 can be limited.

Specifically, the second stopper 221 may be welded and fixed to the connection seat 220.

Referring to fig. 6, in some embodiments of the present invention, the adjusting assembly 300 further includes a third limiting block 360, the third limiting block 360 is detachably fixed on the chassis 210, and the first clamping block 350 can abut against the third limiting block 360 to limit the maximum forward tilting angle of the connecting seat 220 relative to the chassis 210.

It should be noted that the maximum forward tilt angle of the connection seat 220 relative to the chassis 210 refers to an included angle between the upper surface of the connection seat 220 and a vertical plane when the connection seat 220 swings forward to a limit position around the axial direction in the left-right direction.

Therefore, the maximum forward-leaning angle of the connecting seat 220 relative to the chassis 210 can be adjusted by replacing the third limiting block 360 with different thicknesses. In addition, if the third stopper 360 is not provided, the first latch 350 may frequently contact the chassis 210, and the chassis 210 may be easily worn. The third stopper 360 may replace the chassis 210 and the first latch 350, so as to reduce the wear of the chassis 210.

In addition, the third stopper 360 may be made of a material having a higher hardness, which is advantageous to extend the service life of the seat. Because the volume of the third limiting block 360 is small, compared with the chassis 210 which is integrally made of a material with high hardness, the third limiting block 360 is only required to be made of a material with high hardness, and materials can be effectively saved.

The following describes a process of adjusting the reclining angle of the connecting seat 220 of the chassis apparatus according to a preferred embodiment of the present invention with reference to fig. 9 to 17. In this embodiment, the first stopper 310 has three first steps 312 having different heights.

Referring to fig. 9 and 10, fig. 9 and 10 are views of the chassis arrangement of an embodiment of the present invention at a first maximum recline angle. At this time, the first fixture block 350 abuts against the first step 312 with the highest height, the connecting base 220 is in a horizontal state, and the maximum backward tilt angle B of the connecting base 220 is 90 °. It should be noted that, in the present embodiment, only one angle is listed for illustrating the technical effect, the first maximum reclining angle may be other values, the present embodiment does not limit the specific value of the maximum reclining angle B, and the following specific values of the maximum reclining angle B are the same.

Referring to fig. 11 and 12, fig. 11 and 12 are views of the chassis device at a second maximum reclining angle according to an embodiment of the present invention. At this time, the first block 350 abuts against the first step 312 of the second height row, and the maximum tilting angle B of the connecting seat 220 is 100 °. Further, the second maximum recline angle may also be other values.

Referring to fig. 13 and 14, fig. 13 and 14 are views of the chassis device at a third maximum reclining angle according to an embodiment of the present invention. At this time, the first latch 350 abuts against the first step 312 with the minimum height, and the maximum tilting angle B of the connecting seat 220 is 120 °. Further, the third maximum recline angle may also be other values.

Referring to fig. 15 to 17, fig. 15 to 17 are views of the chassis device at a fourth maximum reclining angle according to the embodiment of the present invention. At this time, the second limiting block 221 abuts against the locking platform 211, and the maximum backward tilt angle B of the connecting seat 220 is 130 °. Further, the fourth maximum recline angle may also be other values.

Referring to fig. 2, a seat according to a second aspect of the present invention includes the above-described chassis device, a seat cushion 110 and a seat back 160. The seat cushion 110 is fixedly connected with the chassis 210, and the seat back 160 is fixedly connected with the connecting base 220.

According to the utility model discloses seat has following beneficial effect at least: by using the chassis device, the maximum backward-leaning angle of the chair back 160 can be effectively improved, thereby meeting the consumption requirements.

Referring to fig. 2, the seat further includes universal wheels 130, a wheel frame 140, and a gas spring 150. The universal wheel 130 is provided in plural, the plurality of universal wheels 130 is mounted to the wheel frame 140, and the wheel frame 140 is mounted to the chassis 210 by the gas spring 150. The universal wheels 130 allow movement of the seat over the ground, while the gas springs 150 allow elevation of the seat cushion 110.

Referring to fig. 2 and 3, in some embodiments of the present invention, further including a fastener, the connecting seat 220 is provided with a slot 222, and one end of the chair back 160 is inserted into the slot 222. One end of the seat back 160 is fixed to the coupling seat 220 by a fastener to restrict the movement of one end of the seat back 160 out of the slot 222.

Since one end of the seat back 160 is inserted into the insertion groove 222, the seat back 160 can be stably connected with the connection seat 220.

Specifically, the fastener includes a screw passing through the coupling seat 220 and threadedly coupled with the seat back 160, thereby restraining one end of the seat back 160 in the slot 222.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Chassis apparatus, characterized in that, includes:

the rotating assembly comprises a chassis, a connecting seat and a rotating shaft, the rotating shaft is rotatably connected with the chassis, the rotating shaft is fixedly connected with the connecting seat, the chassis is used for being connected with a seat cushion, and the connecting seat is used for being connected with a chair back;

the adjusting assembly comprises a first clamping block, and the first clamping block is fixed on the rotating shaft; the first clamping block can be abutted against the chassis to limit the backward leaning angle of the connecting seat relative to the chassis.

2. The chassis device of claim 1, wherein the adjustment assembly further comprises a first stop block, the first stop block is connected to the chassis, the first stop block comprises a plurality of first steps with different heights; each first step can be respectively abutted against the first clamping block so as to adjust the maximum backward inclination angle B of the connecting seat relative to the chassis.

3. The chassis device according to claim 2, wherein the first locking block is provided with a first plane, each of the first steps is provided with a second plane, and the first plane rotated to a set angle can be fitted with the corresponding second plane.

4. The chassis device according to claim 2, wherein the chassis is provided with a sliding groove, the first limiting block is located in the sliding groove, and the first limiting block can slide in the sliding groove along a first direction, so that each of the first steps abuts against the first clamping block.

5. The chassis apparatus according to claim 4, wherein the adjusting assembly further comprises a first elastic member and a positioning member, the inner surface of the sliding groove forms a plurality of grooves, and the plurality of grooves are arranged at intervals along the first direction; the first limiting block is provided with a mounting hole, the positioning piece and the first elastic piece are both arranged in the mounting hole, and the first elastic piece is used for keeping the positioning piece in any one of the grooves; the positioning piece can simultaneously abut against the inner surface of the mounting hole and the inner surface of any one of the grooves so as to limit the movement of the first limiting block along the first direction.

6. The undercarriage arrangement of claim 5 wherein said positioning member comprises a ball bearing; or, the setting element includes the reference column, the reference column orientation the terminal surface of spout includes the curved surface.

7. The chassis device according to claim 1, wherein the rotation assembly further comprises a second limiting block, the second limiting block is fixed to the connecting seat, the chassis is provided with a clamping table, and the second limiting block can be abutted against the clamping table to limit a maximum tilting angle B of the connecting seat relative to the chassis.

8. The chassis device according to claim 1, wherein the adjusting assembly further comprises a third limiting block, the third limiting block is detachably fixed to the chassis, and the first block can abut against the third limiting block to limit the maximum forward-leaning angle of the connecting seat relative to the chassis.

9. A seat, comprising:

the chassis arrangement of any one of claims 1 to 8;

the seat cushion is fixedly connected with the chassis;

the chair back is fixedly connected with the connecting seat.

10. The seat according to claim 9, further comprising a fastener, wherein the connecting seat is provided with a slot, and one end of the seat back is inserted into the slot; the one end of the chair back is fixed on the connecting seat through the fastener so as to limit the movement of the one end of the chair back which is separated from the slot.

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